Not an original idea as it has been implemented in another game I play, but I though it would be a nice addition here. It may be just laziness, but I would love to see a team reset or rebirth option after a CL season ends. Reset the team so it is "new" and can be played next season, without having to go through remaking the whole team.

IIRC something like this was suggested some time ago, applied to ladder competitions. The idea was to be able to reset any team to its starting formation at any time just clicking a button next to the fire button. Of course a confirmation window is needed